public void Weights_WrongValues(double d1, double d2, double d3)
{
var w = new List <double> {
d1, d2, d3
};
Assert.False(CategoricalDistribution.IsValidParam(w));
Assert.False(Dist.AreValidWeights(w));
Assert.Throws <ArgumentOutOfRangeException>(() => { Dist.Weights = w; });
}